<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form th:action="@{http://localhost:8081/updWareUserName}">
        <input type="text" th:value="${backgrounduser.getAccountnumber()}" name="userName">
        <input type="hidden" th:value="${backgrounduser.getBackgrounduserid()}" name="userId">
        <input type="submit" value="修改">
    </form>
</body>
</html>